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Finding the Fourth Proportional to 101,072.64, 139,472.64 and 56,352

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Solution

The fourth proportional to 101,072.64, 139,472.64 and 56,352 is: 77,761.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,072.64 : 139,472.64 = 56,352 : x
  2. Step 2: Convert to fraction form
    101,072.64/139,472.64 = 56,352/x
  3. Step 3: Cross multiply
    101,072.64x = 139,472.64 × 56,352
  4. Step 4: Simplify right side
    101,072.64x = 7,859,562,209.28
  5. Step 5: Solve for x
    x = 7,859,562,209.28/101,072.64
  6. Step 6: Final answer
    x = 77,761.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.